Ernest h



(No Model.)

E. H. VOGEL.

BOX STRAP.

Patented Oct. 2.2, 1895.

UNITED STATES PATENT OEETCE.

ERNEST H. VOGEL, OF NEW YORK, N. Y., ASSIGNOR TO THE CARY MANU- FACTURING COMPANY, OE SAME PLACE.

BOX-STRAP.

SPECIFICATION forming part of Letters Patent No. 548,483, dated October 22, 1895.

Application filed February 16, 1895. Serial No. 538,708. (No model.)

To @ZZ whom it may concern,.-

Beit known that I, ERNEST H. VOGEL, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Box- Straps, of which the following is a speciiication.

This invention relates to an improved boxstrap by which the 'connection between adjacent ends ofthe straps is made in a very strong and reliable manner Without requiring the riveting of the strap ends.

Heretofore the straps were cut from sheetiron of the required thickness and connected by one or more rivets, so as to obtain the required lengths in which box-straps were sold. The rivets were objectionable, as they frequently broke in applying the straps, because the overlapping end ot the strap when bent around the corner of the box projected from the strap.

My invention is designed to obviate this defect and furnish a more reliable support for the ends of the box-straps than the riveted straps heretofore in use.

My invention consists of a box-strap, the adjacent ends of which are connected by means of flanges bent up from the stock so as to form openings, through which the bent-up flanges ot' the overlapping ends are passed, said flanges being then bent over so as to obtain the reliable connection for the strap ends.

In the accompanying drawings, Figures l and 2 represent perspective views of the two adjacent ends of a box-strap before they are connected with each other. Fig. 3 is a top view of the ends of the straps after they are connected. Fig. 4. is a vertical transverse section on line l 4, Fig. 3. Fig. 5 is a top view of a modited construction of strap provided with inwardly-bent reinforcing edges. Fig. 6 is a transverse section on line 6 6, Fig. 5.

Similar letters of reference indicate correy so that rectangular openings b b are produced thereby in the ends. The flanges a, that'are bent up from one end of the strap, are located at the inner edges of the rectangular openings b, while the flanges ct of the adjacent strap end are located at the outer edges of the rectangular openings b of the strap end, as shown clearly in Figs. 1 and 2.

In making the straps it is preferable to punch the openings and the bent-up flanges of an entire sheet. The ends of the sheets are then placed one over the other, so as to overlap, the flanges a, of one end passing through the openings l) at the other end of the sheet, While the flanges a of the underlapping end of the sheet pass through the openings b of the overlapping end of the sheet. The langes ct a are then bent in opposite direction over the edges of the openings b Z2', one flange appearing at the top of the sheet, while the other appears at the under side of the same, as shown in Figs. 3 and Il. The sheets are then cut into straps in a slitting-machine and rolled up directly ready for shipment.

For straps of the usual width it is preferable to produce two flanges in each strap end, so that a twofold connection of the overlapping ends of the strap is obtained, as shown in the drawings; but it is obvious that for narrower straps one interlocking flange and opening at each end of the strap will give reliable connection between the strap ends.

Vhen it is desired to increase the strength of the box-strap, it is preferable to bend over the edges of the same, so as to form longitudinal reinforcing-Ilanges C C along each edge of the strap, as shown in Figs. 5 and 6. This rolling over of the edges is produced by passing the entire length of the box-strap with its connected portions through the Well-known folding-rolls. This not only reinforces the strap, but also the interlocking at the points to which the adjacent strap ends are connected, as shown in Fig. 6.

The connection of the strap ends in my im proved box-strap can be made by means of suitable dies without necessitating any hand labor for doing the same, as was necessary in riveting the strap ends in the ordinary manner. The box-straps can thereby be made at reduced expense, while a more reliable conf 1 1' .l neeton'of the overlapping strapendsgs 0131 sides of the opn'inggsomhat'therangeso1 f -f f yGamed'withoua;'che1objeotonablo features'of ythe respoetvfuds daube insertdrinto'helg.

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